
package org.wxwp;

public class Demo {
    public static void main(String[] args) {
        User u = new User(100, "李四");

        User u2 = new User(200, "张三丰");

        for (int i = 1; i < 35; i++) {
            System.out.printf("%d 的平方是：%d%n", i, pf(i));
        }

        Outter.out.print("ok");

        Outter.Book book = new Outter().new Book();
        Outter.out.print(book);


    }

    public static int pf(int i) {
        return i * i;
    }

}
